diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7086cb2d77e4b269412f5b0aed64cd6ee2004363..da391dde77e5ec17bb8cb7ddeccfb5be50ec8ae5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ All notable changes to this project will be documented in this file.
 - Changed code style to PSR-2
 - addInstitution URL and email in disco-tpl.php are loaded from a config file
 - Templates are included from module perun
+- Using of short array syntax (from array() to [])
 
 #### Fixed
 - Fixed the email address in footer
diff --git a/themes/bbmri/default/includes/header.php b/themes/bbmri/default/includes/header.php
index 0fb265aca5109787238b514912c17f52df555337..da9744a31fa7bdec46d0763ac9bb92e54f2ee6a6 100644
--- a/themes/bbmri/default/includes/header.php
+++ b/themes/bbmri/default/includes/header.php
@@ -5,25 +5,25 @@ use SimpleSAML\Module;
 /**
  * Support the htmlinject hook, which allows modules to change header, pre and post body on all pages.
  */
-$this->data['htmlinject'] = array(
-    'htmlContentPre' => array(),
-    'htmlContentPost' => array(),
-    'htmlContentHead' => array(),
-);
+$this->data['htmlinject'] = [
+    'htmlContentPre' => [],
+    'htmlContentPost' => [],
+    'htmlContentHead' => [],
+];
 
-$jquery = array();
+$jquery = [];
 if (array_key_exists('jquery', $this->data)) {
     $jquery = $this->data['jquery'];
 }
 
 if (array_key_exists('pageid', $this->data)) {
-    $hookinfo = array(
+    $hookinfo = [
         'pre' => &$this->data['htmlinject']['htmlContentPre'],
         'post' => &$this->data['htmlinject']['htmlContentPost'],
         'head' => &$this->data['htmlinject']['htmlContentHead'],
         'jquery' => &$jquery,
         'page' => $this->data['pageid']
-    );
+    ];
 
     Module::callHooks('htmlinject', $hookinfo);
 }